Research-to-Product Studio

Building what
moves people

Human-centered AI and stories that move people forward. We turn bold ideas into products with purpose.

From Latin numen — a divine force
Explore Our Work →
Scroll
How We Think

Principles that guide us

Building AI that truly serves people requires more than technical skill. These are the beliefs that shape every product we create.

01

Augment, Don't Replace

AI should amplify human capability, not substitute for human judgment. We build tools that make people more effective, not obsolete.

02

Clarity Beats Complexity

The best solutions feel simple. We cut through noise to deliver products that are intuitive, focused, and immediately useful.

03

Evidence Over Ego

We follow the data, not assumptions. Every decision is grounded in research, testing, and real-world feedback.

04

Ethics in the Loop

Responsible AI isn't an afterthought. We consider impact, fairness, and transparency at every stage of development.

What We Do

We build, extend, and integrate — for you

Companies come to us when they need a technological extension that’s human-driven. Not just engineers. Thinkers who build.

01

AI Integration & Consulting

We help companies move from "we should use AI" to "here's what it actually does for us." From scoping the right use cases to building and shipping — grounded in what actually serves your users, not what's technically impressive.

02

Software Engineering

Clean, purposeful software built to last. Whether you need a new product from scratch or a capable hand to extend what you already have — we bring precision and human judgment to every line.

Interested in working together?Get in Touch →
What We're Building

Products with purpose

Applied AI that helps people do hard things, data intelligence that helps businesses understand who they serve, and one small app for keeping the record straight between friends.

Live Now · Free
PASO
PASO
AI-Powered Goal Roadmaps

Set a goal, get a roadmap, take the steps. AI-powered guidance that turns ambitions into action — clear milestones, daily momentum, real results. Live now, and free to start.

Open PASO →
Launching Soon
M
MESAi
Restaurant Intelligence

The data layer behind MESA. Every diner interaction becomes intelligence — menu performance, allergen demand, and guest behavior, in one dashboard built for restaurants that want to understand who they serve.

Learn More →
In Beta · iOS
Linestash
The Record, Between Friends

A shared record of the things your friends say out loud. Stash the line, say who said it, keep it forever. Nothing is off the record. Currently in TestFlight with a small group of friends.

Learn More →
Research & Ideas

A studio that reads

Numina is named for numen — a guiding force. The work is grounded in a living dossier of questions and papers we keep returning to, and in a few research threads that run alongside the products.

Augmentation over automation

How do tools extend human judgment instead of replacing it? The oldest question in computing, and still the one that matters most.

Choice under constraint

People decide badly when options overwhelm. Good design narrows the field without removing agency — the heart of MESA: three questions, three dishes.

Meaning & momentum

What moves a person from intention to first step? The psychology of motivation behind PASO and the thesis behind Animo.

Responsible systems

Fairness, transparency, and the human cost of automated decisions — kept in the loop, not bolted on at the end. The MESAi allergen audit trail is a small, concrete version of this.

Active threads
Villages in the string landscapeWarm-starting Calabi–Yau metric networks across a family of shapesResearch note v0.1 · September 2026 · open source→AnimoJust-in-time adaptive interventions for screentime and wellbeingBachelor thesis · University of Amsterdam · in development→

Notes, findings, and the full reading list live on the research page.

Explore the research →
Who We Are

Built by one

Portrait of Justus van Eijk
Justus van Eijk
Founder & Solo Builder

Numina Labs is Justus van Eijk — a builder from Amsterdam who believes the best technology is the kind that quietly makes people more capable.

Before Numina Labs, I wrote, animated, and pitched Nova Pangea — an original sci-fi series I took to New York with a teaser I built entirely by hand in Unreal Engine, no AI involved. That taught me more about what it means to create something from nothing than any course or codebase could. I carried that same instinct into software: build it yourself, build it properly, build it for a reason.

Now I apply that to AI and software — designing products that help people navigate complexity, helping companies integrate technology that actually fits how humans think and work, and keeping a few research threads open on the side.

"We build AI that augments human potential — tools that help people think clearer, move faster, and achieve what matters most."
Numina Labs

Got a project in mind?

Whether you’re looking to integrate AI into your product, need a capable engineering partner, or just want to explore what’s possible — reach out. No pitch deck required.

justus@numinalabs.app →